lionel engine???? ac or dc?

the general , rock island and peoria set, engine #8004 made from 1980 to 1982. is this an AC or DC engine? i know in the 1980's some of the general engines lionel made was DC only. but i dont know how to tell them apart.

i did not want to spend my time looking for this set if it was DC only...lol the rock island is my favorite road name, and the general is my favorite steam engine, so i can look past the fact that this set is not 1:48....lol

I don't know about current TMCC/Legacy Lionel, but the conventional locomotives are AC as they still use DC to trigger the whistle/horn and bells.

Although I do have the Fort Collins Trolley and it runs on AC or DC. As a matter of fact, until I got a new AC controller it was running off of an older (DC) MRC Tech II HO transformer I had. I know the manual that came with trolley said it was okay to run it on either AC or DC.

I'm pretty sure if you put a modern loco with sound on DC powered track it'll constantly trigger the whistle/horn or bell depending on which way the track is wired.